joeriv
Posts: 154
Joined: Sun Mar 24, 2013 1:33 pm
Location: Fairfield County CT

Costco 12v Jump Starter

Tue Jun 14, 2016 8:39 am

Just bought this Li Ion unit for $60 from Costco, measures 5.35 x 3 x 1 inches, weighs 0.65 pounds. I have a more expensive unit (jump started ICE cars no problem) and bought this for my Lexus. IMHO this is an essential for a LEAF - you never have to worry about a flat 12v battery. I'll bet that in an emergency you could run the Leaf on this alone.
2017 Leaf S with QC, JUN mfg date

GlennD
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Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: Costco 12v Jump Starter

Tue Jun 14, 2016 10:20 am

Assuming it is daytime and you do not need headlights then exclusive of the navigation module all you need is enough voltage to pull in the contactor. When it closes there will be a very large current from the inverter. In my jump statr pack it worked to pull in the contactor. Then a thermal breaker opened killing the pack until it cooled down. By then it did not matter since the 12V inverter was running.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
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joeriv
Posts: 154
Joined: Sun Mar 24, 2013 1:33 pm
Location: Fairfield County CT

Re: Costco 12v Jump Starter

Tue Jun 14, 2016 11:38 am

I'm not an electronics whiz so bear with me - it sounds like there is a surge after starting? Is that what tripped your jump starter?
2017 Leaf S with QC, JUN mfg date

GlennD
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Joined: Sun Dec 18, 2011 7:14 pm
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Location: Anaheim

Re: Costco 12v Jump Starter

Tue Jun 14, 2016 4:48 pm

When the inverter is running it puts out over 100A. That was enough to overwhelm the starter pack battery. Since the Leaf 12V battery was quite low the majority of the current flow was to the start pack. When it dropped out the inverter charged the Leaf 12V battery. At that point the car was running. I drove it to the dealer and I requested a new battery.

My "B"''s Tesla charger does a much better job of charging the 12V battery so I no longer carry the jump start pack. To maintain the gel cell battery in the jump start I charge it every couple of months. Letting a lead acid battery run down kills it. That is why a new car that is dead and needs to be jumped needs a new battery.

I once purchased a display Acura Legend. It had to be jumped and when I got home the battery died. I WAS NOT HAPPY but they came to the house and replaced the battery. Buying a high end car escalates the service level. On the other hand a simple rear end collision with minimal damage on my "B" was 4K. Good thing I was not paying.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250e

joeriv
Posts: 154
Joined: Sun Mar 24, 2013 1:33 pm
Location: Fairfield County CT

Re: Costco 12v Jump Starter

Thu Jun 16, 2016 1:07 am

This is analogous to what happens when you jump start an ICE with an alternator?
2017 Leaf S with QC, JUN mfg date

LeftieBiker
Posts: 9212
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Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Costco 12v Jump Starter

Thu Jun 16, 2016 1:51 am

Letting a lead acid battery run down kills it. That is why a new car that is dead and needs to be jumped needs a new battery.


That is often true, but not always. When it was about a year old, my 2013 Leaf suffered one day from a 12 volt battery level so low that while it would dimly light the instrument panel, it wouldn't unlock the doors first. I charged it immediately, started using a battery maintainer, and almost two years later the 12 volt battery still tests ok. You can run one of these batteries down to 5-10% or so briefly and you lose capacity, but it isn't necessarily unsaveable or unusable.
Last edited by LeftieBiker on Thu Sep 13, 2018 12:33 am, edited 1 time in total.
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RegGuheert
Posts: 6287
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Re: Costco 12v Jump Starter

Thu Jun 16, 2016 6:50 am

Here's a link to the product at Costco ($59.99 + $5.99 shipping and handling):
Lithium Jump Starter and Portable Power Bank

And here it is at Amazon ($79.98):
High Output Jump Starter 2 USB Ports for Fast Charging of Mobile Devices 8000mAh High Capacity Power Bank 3 Mode Flashlight

That looks like a decent product at a good price. Thanks for the tip!
RegGuheert
2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

Bob
Posts: 300
Joined: Fri May 24, 2013 7:13 pm
Delivery Date: 30 May 2013
Location: New Hampshire

Re: Costco 12v Jump Starter

Thu Jun 16, 2016 7:12 am

Lithium batteries are often specified as having ~2% loss per month, so after one year of sitting in the trunk, it is conceivable that this device might be down to 76% of rated capacity. So it might be wise to recharge it every six months or so.

Bob

Xilidyn
Posts: 1
Joined: Wed Sep 12, 2018 11:32 pm
Delivery Date: 08 Mar 2016
Location: New Jersey

Re: Costco 12v Jump Starter

Thu Sep 13, 2018 12:30 am

Sorry for bumping, but this is my story!

So my car's battery was acting up for months now. I drive only on weekends usually and this weekend I forgot my car charger somewhere so I decided to leave car charger in the car with my Android phone. Big mistake.. just 30 minutes of android charging and my car wouldn't start..is there an app for that, huh?

After a bit of research and reading up on posts how Audi magically can produce battery that is so advanced and great that the 3 major battery manufacturers can only dream to come close. This supposed magic justified the 3x the cost of the battery from the dealership, the battery that they sell is $275.

I searched ETKA and 000915105AG is the part number which is actually very reasonably priced. $108 is the price showing up for me. Then Audi promptly superseded it with a battery 000915105DH, thats now $275 https://10carbest.com/best-jump-starters Why superseded? I guess that new part no. matches engine bay color scheme better or something..? But it was Sunday and I wanted to resolve it sooner.

I called up Costco and they told me that they don't carry batteries for Audis.. WRONG. Yes they DO. I went and bought my battery - group 48 for cool 68.99 + tax and I was on my way home. The SKU is 989227 it is the group 48 battery - tested as one of the best by consumer reports..so who do you trust consumer reports or doucebags at the dealership?
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